NX How to modify a read-only part in an assembly

How to modify a read-only part in an assembly.

The Read-Only part can be modified within the context of an assembly using an over-ride expression. The original file is un-modified when opened by itself. The read-only part is only modified when the assembly is opened. See attached video for procedure along with provided steps below.

How to Modify a Read-Only Part in an Assembly

1.       Open the assembly.

-          Note: Part family members are read only. Modifying read-only parts can only be done in the context of an assembly.

Adding Part Family Member

1.       Choose the Assemblies tab -> Base Group -> Add Component.

2.       In the Add Component dialog select the Part Family part.

3.       In the Choose Family Member dialog, under the Matching Members group, select the desired part and click Ok.

4.       Adjust and place the part as desired and click Ok.

Alter the Part Family Member

1.       In the Assembly Navigator, right click on the Part Family Member and select Make Work Part.

2.       Choose the Tools tab -> Utilities group -> Expressions.

3.       Take note of the expression(s) that will be changed.

4.       Click Close.

5.       Navigate over to the Assembly.

6.       Choose the Tools tab -> Utilities group -> Expressions.

7.       In the Name column, type in the part family part.

-          Note: Part Family Members default to read-only and therefore can be modified with override expressions.

-          The formatting is as follows:

(Name of part family part)::(Name of the expression that is being over-ridden)

For Example: Small_hole::hole_diameter

8.       In the Formula column, enter the new value and click Ok.

-          Note: The part will only be changed in the assembly. The original part will remain unchanged.